Switching 5v pin

I have a sensor which draws power from the pin labelled ‘5v’ on a Seeeduino V2.21 (Atmega 328P). I have sensors which can draw power from other pins, e.g. ANALOG pin 0), but this sensor cannot for some reason. My problem is that I need to switch the ‘5v’ pin off & on to control the sensor. Is anyone able to tell me how I can do this, please?

The 5V pin is always on. How much power does your sensor require?